The Firman inverter generator 9400/7500 watts dual fuel is a portable single-phase generator designed for use with natural gas and propane as power source. it offers reliable and efficient power generation for businesses, industrial applications, and light equipment and tools. The dual fuel capability ensures flexibility in selecting the most cost-effective and convenient fuel option based on availability and location. The Firman brand is known for producing durable and reliable generators, making this model a valuable investment for those in need of a versatile power solution. Basically brand new. Only used 3 times